Port Audio, sound level, and http access to svn ?

Mikael Magnusson mikma264 at gmail.com
Mon Oct 2 20:15:28 CEST 2006


Philippe Torrelli wrote:
> Hi Cesc and list,
> 
> Back on track, I tried to sort out my audio problems ... 
> 
> I finally had mdsound working, but the playback was awfull ( very metallic,
> almost un-audible ) even in G.711 with real sip phones, or x-lite ... and so
> on.. Anyway The other party listening to my voice as sent by minisip had a
> satisfying quality...  
> Then I tried - as you suggested - to build a PortAudio driver...
> 
> I compiled the version 19 found on www.portaudio.com with support for asio,
> WinMME , .... I then built a PaSoundDriver dll, changed in the .conf to pa:0
> ... 
> 
> Trying to use this dll, crashes happen. 
> I investigated a bit to find out that the 'playback' stream returned by
> portaudio's Pa_OpenStream was  NULL with result code paInvalidChannelCount
> ... Pa_OpenStream succeed for the 'input' stream...
> I then tried with other Pa host api ( disabled all but directx with flags
> PA_NO_ASIO PA_NO_WMME ), and it made no difference...
> 
> I then experimented a bit with portaudio's Pa_GetDeviceInfo, to find out
> that my 0 device only has input channels ...  the first device here (
> according to portaudio ) able to output sound is 3 ... 
> But this one doesn't have input channel... 
> 
> So I'm puzzled by the fact it works for you using only one device ID for
> both input and output stream ... I suppose it's PC dependant ? 
> 
>  I experimentally assigned InId and OutId in PortAudioDevice classes to
> Pa_GetDefaultInputDevice()  and Pa_GetDefaultOutputDevice() .. and it seems
> to work ok. 
> 
> The sound in the playback is now correct  but seems to be 'over saturated',
> like if it was amplified a lot on the minisip side .. So I have a very good
> quality if my buddy speaks very far from his telephone... 
> Maybe something should resample and rescale values before it plays it back ?
> Should I change my mixer - that is 'spatial' now .
> Do you have a suggestion ? 
> 
> I tried to checkout and diff my current repository with the latest one.. 
> But I have a problem now as the system and network administration team have
> deployed a more restrictive security policy in our site, and  
> now firewall the svn port.. 
> 
> Is there an http access to minisip svn repository ? 
> 
> Thanks in advance.
> 
> Philippe Torrelli

The version in trunk has two separate settings for sound input and 
output device.
Which svn version is you using? Check with "svnversion -c .".

Mikael


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